Photo 1 of 1/2" NPT Male 304 Stainless Steel Oil Sight Glass Hex Head Sight Plug Liquid Level Gauge Oil Indicator Sight Window for Air Compressor Hydraulic Tank (2pcs 1/2" NPT Stainless Steel with Baffle)

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Photo 1 of 1/2" NPT Male 304 Stainless Steel Oil Sight Glass Hex Head Sight Plug Liquid Level Gauge Oil Indicator Sight Window for Air Compressor Hydraulic Tank (2pcs 1/2" NPT Stainless Steel with Baffle)Photo 2 of 1/2" NPT Male 304 Stainless Steel Oil Sight Glass Hex Head Sight Plug Liquid Level Gauge Oil Indicator Sight Window for Air Compressor Hydraulic Tank (2pcs 1/2" NPT Stainless Steel with Baffle)